Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10377635 | Journal of Colloid and Interface Science | 2005 | 5 Pages |
Abstract
To understand the distinction between the effects of zwitterionic, anionic, and cationic l-leucine upon adsorption and lateral interactions at air/water surface, the surface tensions of aqueous solutions of l-leucine-l-leucine hydrochloride and l-leucine-sodium l-leucinate mixtures were measured as a function of concentration and composition at 25â°C. The surface activity decreases in the order l-leucine > l-leucine hydrochloride > sodium l-leucinate. Both l-leucine hydrochloride and sodium l-leucinate form gaseous adsorbed films through the experimentally accessible concentration range, while the adsorbed film of zwitterionic l-leucine shows a transition between gaseous and expanded film.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Norihiro Matubayasi, Shohei Matsuyama, Ryosuke Akizuki,